Liquid-fuel burner.



No. 787,602. PATENTE!) SEPT. 1, 1903. H. A. FRANTZ.

LIQUID FUEL BURNER.

APPLIOATON FILED 00T. 3. 1902.

N0 MODEL.

' I attenua/17,.

UNTTED STATES Patented September 1, 1903.

HIRAM A. FRANTZ, OF CHERRYVILLE, PENNSYliVANIA.

LIQUID-FUEL BURNER.

SPECIFICATION forming part of Letters Patent No. 737,602, dated September 1, 1903.

Application filed October 3, 1902. Serial No. 125.737. (No model.)

To @ZZ whom it may concern:

' Be it known that l, HIRAM A. FRANTZ,a citi- Zen of the United States of America, and a resident of Cherryville,in the county of Northampton and State of Pennsylvania, have invented certain new and useful Improvements in Liquid-Fuel Burners, of which the following is a specification.

My invention relates to an improved form of liquid-fuel burner, designed particularly for use in connection with steam boilers adapted for automobile service, though applicable to other purposes.

The invention is fully described in connection with the accompanying drawings, and the novel features are specifically pointed out in the claims.

Figure 1 is a cross-sectional elevation of my improved burner, taken on the line 1 1 of Fig. 2, a portion of the boiler to which the same is attached being shown. Fig. 2 is a plan view of the same. Fig. 3 indicates a slight modification in the connection of the fuelsupply pipe.

In the arrangement shown the cylindrical boiler-shell 10 depends below the line-sheet 11 and is provided with a bottom plate 12, secured thereto and formed with a large central opening 13 for the reception of the fuel-delivery chamber of the burner, as hereinafter described, and with numerous small perforations 11i for the upward admission of air to the combustion-chamber 15, formed between said perforated bottom plate and the lluesheet 11 of the boiler. Y

My improved burner comprises a fuel-distributing chamber 1G, secured to said perforated bottom plate 12 and projecting through said central opening 13 in the latter into said combustion-chamber 15, a fuel-supply conduit 17 to said distributing-chamber, and a series of burner-tubes 19, radiating from the latter within the combustion-chamber, diectly over the perforated bottom plate 12, and provided with numerous small perforations 20, forming practically uniformly-distributed fuel-outlets immediately below the flue-sheet and intermediate of the latter and the perforated bottom plate 12, the correspondinglydistributed perforations in the latter providing a uniform air-supply to all portions of the combustion-chamber, whereby uniform and thorough combustion of the injected fuel is secured. The distributing-chamber 16 is formed by means of an inverted-cup portion 21 and a bottom closure 22 therefor, both suitably secured by bolting flanges, as shown, to the perforated bottom plate 12. The fuel-supply pipe 17'is preferably connected to an internallyscrew-threaded projection 23, provided for this purpose on the closure-plate 22 of the chamber underneath the perforated bottom plate 12, as shown in Fig. 1, though this connection may obviously be made directly to the upwardly-projectedcup portion 2l of the chamber, if` preferred, as indicated in Fig. 3, the fuel in either ease being suitably injected through said pipe 17 into the distributing-ehamber and distributed therefrom through the perforated burnertubes 19. These burner-tubes, as previously stated, radiate from the distributing-chamber 16, within the combustionchamber 15, and the free outer end 24 of each tube is bent and returned radially inward between the main portions of the same and of an adjacent tube, which main portions diverge as the distance from the central distributing chamber increases. This construction forms a U -shaped end on each tube, the short member 24. of which occupies the otherwise considerable space intervening between the tubes, thereby permitting of a moreuniform distributing of fuel to the combustion-chamber through the perforations provided throughout the whole length of the bent tube, and thus providing a very compact burner of great heating capacity.

lVhat I claim is- 1. As a new article of manufacture a liquidfuel burner of circular form comprising a eentral fuel-distributing chamber and a series of perforated burner-tubes radiating therefrom and having the outer portion of each bent into horseshoe shape with the returned end portion extending radially inward between the diverging main portion of said tube and of an adjacent tube substantially as set forth.

2. The combination with the cylindrical boiler shell having a dependiu g circular IOO flange, and an annular perforated air inlet annular plate, and a fuel-supply tube to said plate secured to said flange, of a liquid-fuel chamber, substantially as set forth. lo burner comprising a centrally-located fuel- Signed at Treiohlers, Pennsylvania, this distributing chamber having aninverted-oup 18th day of September, 1902.

portion and a bottom closure therefor both HIRAM A. FRANTZ. secured to the inner edge of said annular Vitnesses:

' plate, a serieso'f perforated U-shaped burner- A. J. ANDREWS,

tubes radiating from said chamber above said THOS. W. KESTER. 

